Answer:
Step-by-step explanation:
Common ratio (r) = 2nd term / 1st term = 15/3 = 5
Recursive formula:

Explicit formula:
a = first term = 3

The answer is B. the others doesn’t make sense
Answer:
(5,3) and (10,6)
Step-by-step explanation:
Answer: X minus 1 over 2
Step-by-step explanation:
Use an inverse function calculator
Answer:
x= -1
Step-by-step explanation:
First, distribute the -3 through the parentheses
4x-8= -3(2x+6)
= 4x-8= -6x-18
Second, move the variable to the left-hand side and change its sign
4x+6x= -18+8
10x= -10
Divide both sides by 10
x=-1